How do I configure my highly available cluster to enable access to storage devices managed by fence agents in RHEL 6 or 7?
Issue
- Which fence agents should include an
<unfence>section in their/etc/cluster/cluster.confon RHEL 6? - Nodes are not being "unfenced" by
fence_scsiwhen they join apacemakercluster - Do I need to configure something special so that the cluster enables access to the shared storage devices managed by my fence devices when a node joins?
- What storage fencing options are available?
Environment
- Red Hat Enterprise Linux (RHEL) 6 or 7 with the High Availability Add On
cmanclusters with or withoutpacemaker- A fence agent in use by one or more cluster nodes which controls access to a resource, such as storage, that must be enabled when a node joins the cluster. Agents provided by Red Hat that require such functionality are:
fence_scsifence_sanlockfence_cisco_mdsfence_ifmibfence_sanbox2fence_brocade
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